I have an Acer Z Aspire, Win 75 basic desktop computer that my son treated to when it first came out wayback. OK. I'm waiting for the comments of ;It's old get rid of it and buy a new one.' I'm 89 and think this one will see me out if I can get this problem fixed. My computer screen has started to fade to grey and word definition getting fainter. Is there a way to fix this by system adjustment or is it a computer repair job? Any suggestions in layman's language would be appreciated. Thanks in advance.